A split mattress

The modular mattress, assembled using mortise and tenon joints, solves the problems of inconvenient transport and difficult maintenance of traditional mattresses, achieving convenient transport, high flexibility, good stability, and easy cleaning and maintenance.

CN224522752UActive Publication Date: 2026-07-21陈文
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
陈文
Filing Date
2025-05-27
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Traditional mattresses are bulky and heavy, making them inconvenient to move, especially in high-rise residential buildings; they also lack flexibility, making it difficult to pass through narrow passages or door frames, and are inconvenient to maintain and replace.

Method used

It uses at least four splicing modules, which are spliced ​​together by mortise and tenon structure. The modules are connected by springs and piston caps, and fixed with steel bars. The double-layer spring design enhances support and stability.

Benefits of technology

It offers ease and flexibility in handling, reduces maintenance costs, improves stability and durability, facilitates disassembly and cleaning, and enhances support and comfort.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a spliced mattress, which comprises at least four spliced modules, and the spliced modules are spliced through a mortise and tenon structure; a first spliced module and a second spliced module are spliced through a first mortise and tenon structure in a horizontal direction, a third spliced module and a fourth spliced module are spliced through a second mortise and tenon structure in the horizontal direction, the first spliced module and the third spliced module are spliced through a third mortise and tenon structure in a vertical direction, and the second spliced module and the fourth spliced module are spliced through a fourth mortise and tenon structure in the vertical direction, so as to form a complete square mattress; the mattress provided by the application adopts various spliced modules, which not only provides great convenience in carrying and moving, but also is more convenient in maintenance and replacement, facilitates production line production, reduces labor, reduces maintenance cost, and is easy to clean; meanwhile, the spliced modules are connected through a mortise and tenon connection mode, so that the connection between the spliced modules is firm and stable, has high stability and durability, has various combination forms, is convenient for multiple disassembly and assembly, and is beneficial to diversified assembly of users.
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Description

Technical Field

[0001] This application relates to the field of daily necessities technology, specifically to a modular mattress. Background Technology

[0002] A mattress is an item placed between the human body and a bed to ensure that consumers get healthy and comfortable sleep.

[0003] Traditional mattresses, especially spring mattresses or thick latex mattresses, are large and heavy, making them extremely inconvenient to move and requiring multiple people to assist. For families living in high-rise buildings without elevators, moving them upstairs is particularly difficult, potentially requiring furniture disassembly or replanning of the moving route, causing significant inconvenience. Furthermore, traditional mattresses lack flexibility, making it difficult to navigate narrow passageways or doorways, and adjusting their position or cleaning them is also inconvenient. In addition, traditional mattresses present challenges in maintenance and replacement. Utility Model Content

[0004] Therefore, this application provides a modular mattress to solve the problems of inconvenience in transportation, difficulty in maintenance, and poor flexibility of existing mattresses.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A modular mattress includes at least four modular modules, referred to as a first modular module, a second modular module, a third modular module, and a fourth modular module;

[0007] The first splicing module and the second splicing module are spliced ​​together horizontally using a first mortise and tenon structure, the third splicing module and the fourth splicing module are spliced ​​together horizontally using a second mortise and tenon structure, the first splicing module and the third splicing module are spliced ​​together vertically using a third mortise and tenon structure, and the second splicing module and the fourth splicing module are spliced ​​together vertically using a fourth mortise and tenon structure, forming a complete square mattress.

[0008] The first splicing module, the second splicing module, the third splicing module, and the fourth splicing module each have multiple springs and multiple mounting holes for installing the springs arranged along the height direction inside.

[0009] Optionally, each of the splicing modules has a plurality of piston caps on its top corresponding to the springs above it;

[0010] The plurality of mounting holes are arranged in an array, and the plurality of piston caps in each row of mounting holes are connected by a steel bar. Both ends of the steel bar are fitted with gaskets, and the outer end of the steel bar is provided with a cotter pin corresponding to the outer side of the gasket.

[0011] Optionally, the mounting hole is a square hole or a circular hole;

[0012] The piston cap includes a pressing part at the top and a connecting part at the bottom. The shape of the pressing part is adapted to the shape of the mounting hole, and the pressing part and the connecting part are integrally formed. The connecting part has a limiting hole for inserting the reinforcing bar in the radial direction. The side of the splicing module has a strip hole for passing through the reinforcing bar.

[0013] Optionally, the lower middle positions of the first splicing module and the second splicing module are respectively provided with a first notch and a second notch along the length direction, and the upper middle positions of the third splicing module and the fourth splicing module are respectively provided with a first mortise and tenon joint and a second mortise and tenon joint that are adapted to the first notch and the second notch along the length direction.

[0014] The second and fourth splicing modules have a third notch and a fourth notch respectively on the left middle along the width direction. The first and third splicing modules have a third mortise and tenon joint and a fourth mortise and tenon joint respectively on the right middle along the width direction, which are adapted to the third notch and the fourth notch.

[0015] Optionally, the first and second notches are of equal size, the third and fourth notches are of equal size, and the first notch is larger than the third notch.

[0016] Optionally, it also includes a fifth splicing module and a sixth splicing module;

[0017] The fifth splicing module has a fifth notch that matches the third tenon joint along the width direction at the middle left side position, and a fifth tenon joint that matches the third notch along the width direction at the middle right side position.

[0018] The sixth splicing module has a sixth notch that matches the fourth tenon joint along the width direction at the middle left side position, and a sixth tenon joint that matches the fourth notch along the width direction at the middle right side position.

[0019] The fifth splicing module has a seventh notch along its length at the lower middle position, and the sixth splicing module has a seventh mortise and tenon joint that matches the seventh notch along its length at the upper middle position.

[0020] Optionally, the cross-section of the square mattress is square;

[0021] It also includes four arc-shaped splicing modules. The inner end face of the arc-shaped splicing module is a plane, and the outer end face of the arc-shaped splicing module is an arc surface. The inner end faces of the four arc-shaped splicing modules are respectively spliced ​​with the outer surfaces of the first splicing module, the second splicing module, the third splicing module, and the fourth splicing module through the fifth tenon structure to form a circular mattress.

[0022] Optionally, the splicing module includes a fabric layer, a support layer, and a filling layer, with the filling layer located above the support layer and the fabric layer covering the outside of the filling layer;

[0023] The mounting holes are evenly distributed within the support layer.

[0024] Optionally, the filling layer is made of sponge or memory foam.

[0025] Optionally, the spring is divided into a first spring located on the outside and a second spring nested inside the first spring, wherein the diameter of the first spring is larger than the diameter of the second spring.

[0026] Compared with the prior art, this application has at least the following beneficial effects:

[0027] 1. Based on further analysis and research of the problems in the prior art, this application provides a modular mattress, including at least four modular modules, which are connected by mortise and tenon joints. The mattress provided by this application uses multiple modular modules, which not only greatly facilitates handling and movement, but also makes maintenance and replacement easier, facilitating production line production, reducing labor, lowering maintenance costs, and making it easy to clean. At the same time, the mortise and tenon joints between the modular modules make the connection between them firm and stable, with high stability and durability. The combination forms are diverse, facilitating multiple disassembly and assembly, and allowing users to perform diverse assembly.

[0028] 2. The mattress of this application has springs installed in the mounting holes and piston caps installed on top. Each row of piston caps is penetrated by a steel bar. Each splicing module is connected to each row of piston caps by multiple steel bars, which not only enhances the support and stability of the mattress, improves its durability and comfort, but also reduces the disturbance caused by turning over, and facilitates assembly and maintenance.

[0029] 3. The spring in this application adopts a double-layer structure, consisting of a first spring located on the outside and a second spring nested inside the first spring. The diameter of the first spring is larger than that of the second spring. Through the setting of the double-layer spring system, double support is provided, which significantly improves the support, comfort and durability of the mattress. Attached Figure Description

[0030] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0031] Figure 1 This is a schematic diagram of the structure of the spliced ​​mattress provided in Embodiment 1 of this application;

[0032] Figure 2 for Figure 1 The top view shown;

[0033] Figure 3 for Figure 1 The diagram shown is a breakdown. Figure 1 ;

[0034] Figure 4 for Figure 1 The diagram shown is a breakdown. Figure 2 ;

[0035] Figure 5 for Figure 3 The top view shown;

[0036] Figure 6 for Figure 1 A structural diagram of the fourth splicing module;

[0037] Figure 7 for Figure 6 Sectional view of the central reinforcement Figure 1 ;

[0038] Figure 8 for Figure 6 Sectional view of the central reinforcement Figure 2 ;

[0039] Figure 9 for Figure 6 A partial schematic diagram of the spacer and cotter pin area;

[0040] Figure 10 This is a schematic diagram of the structure of the spliced ​​mattress provided in Embodiment 2 of this application;

[0041] Figure 11 for Figure 10 The top view shown;

[0042] Figure 12 for Figure 10 The diagram shown is a breakdown. Figure 1 ;

[0043] Figure 13for Figure 10 The diagram shown is a breakdown. Figure 2 ;

[0044] Figure 14 for Figure 12 The top view shown;

[0045] Figure 15 This is a schematic diagram of the structure of the spliced ​​mattress provided in Embodiment 3 of this application;

[0046] Figure 16 for Figure 15 The diagram shown is an exploded view.

[0047] Figure 17 for Figure 16 The top view shown;

[0048] Figure 18 This is a structural schematic diagram of the spliced ​​mattress provided in Embodiment 4 of this application;

[0049] Figure 19 for Figure 18 The top view shown;

[0050] Figure 20 for Figure 18 The diagram shown is an exploded view.

[0051] Explanation of reference numerals in the attached figures:

[0052] 1. Splicing module; 101. Mounting hole; 102. Slide groove; 103. Strip hole; 11. First splicing module; 111. First notch; 112. Third mortise and tenon joint; 12. Second splicing module; 121. Second notch; 122. Third notch; 13. Third splicing module; 131. First mortise and tenon joint; 132. Fourth mortise and tenon joint; 14. Fourth splicing module; 141. Second mortise and tenon joint; 142. Fourth notch; 15. Fifth splicing module; 151. Fifth notch; 152. Fifth mortise and tenon joint; 153. Seventh notch; 16. Sixth splicing module; 161. Sixth notch; 162. Sixth mortise and tenon joint; 163. Seventh mortise and tenon joint; 17. Arc-shaped splicing module; 18. Seventh splicing module; 19. Eighth splicing module; 110. Ninth splicing module;

[0053] 2. Piston cap; 21. Pressing part; 22. Connecting part; 3. Spring; 31. First spring; 32. Second spring; 4. Reinforcing bar; 5. Washer; 6. Cotter pin. Detailed Implementation

[0054] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0055] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "comprising," "including," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0056] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to indicate the general relative positional relationship for the purpose of intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product.

[0057] Example 1

[0058] See Figures 1-9 A type of interlocking mattress includes at least four interlocking modules 1, referred to as first interlocking module 11, second interlocking module 12, third interlocking module 13 and fourth interlocking module 14 respectively;

[0059] The first splicing module 11 and the second splicing module 12 are spliced ​​together horizontally using a first mortise and tenon structure, the third splicing module 13 and the fourth splicing module 14 are spliced ​​together horizontally using a second mortise and tenon structure, the first splicing module 11 and the third splicing module 13 are spliced ​​together vertically using a third mortise and tenon structure, and the second splicing module 12 and the fourth splicing module 14 are spliced ​​together vertically using a fourth mortise and tenon structure, forming a complete square mattress, referred to as the first type of spliced ​​mattress;

[0060] The first splicing module 11, the second splicing module 12, the third splicing module 13, and the fourth splicing module 14 each have multiple springs 3 along the height direction and multiple mounting holes 101 for installing the springs 3.

[0061] This application is constructed from multiple interlocking modules, each relatively small and lightweight, allowing for individual transport and significantly reducing the difficulty of moving the mattress. It is easy to move and highly flexible, allowing users to disassemble and recombine them as needed, facilitating passage through narrow passages or doorways. Maintenance and replacement are also more convenient; if a module is damaged or needs improvement, only the cover module can be replaced, eliminating the need to replace the entire mattress, greatly reducing maintenance costs and making cleaning easier. Gaps exist between the interlocking modules, allowing for free airflow and good breathability. The mortise and tenon joints between the modules ensure a strong and stable connection, providing high stability and durability. The various combination options facilitate multiple disassembly and assembly, allowing users to create diverse configurations.

[0062] Preferably, see Figures 6-9 Each splicing module (first splicing module 11, second splicing module 12, third splicing module 13, fourth splicing module 14) has multiple piston caps 2 corresponding to multiple springs on its top, above the springs.

[0063] Multiple mounting holes 101 are arranged in an array, and multiple piston caps 2 in each row of mounting holes 101 are connected by a steel bar 4.

[0064] More preferably, the mounting hole 101 is a square hole or a round hole;

[0065] The piston cap 2 includes a pressing part 21 at the top and a connecting part 22 at the bottom. The connecting part 22 has a limiting hole for inserting the reinforcing bar 4 in the radial direction. The sides of the first splicing module 11, the second splicing module 12, the third splicing module 13, and the fourth splicing module 14 are all provided with strip holes 103 (travel holes) for passing through the reinforcing bar 4. The strip holes 103 are connected to the limiting holes. Both ends of the reinforcing bar 4 are equipped with washers 5, and the outer end of the reinforcing bar 4 is inserted with a cotter pin 6 corresponding to the outer side of the washer 5. The sides of the splicing modules are provided with grooves 102 on both sides corresponding to the mounting holes 101, so that the washers 5 can move up and down with the reinforcing bar 4. The height of the strip holes 103 is greater than the height of the limiting holes to ensure the vertical movement stroke of the reinforcing bar 4 in the limiting holes.

[0066] The pressing part 21 at the top and the connecting part 22 at the bottom of the piston cap are designed as a whole. The pressing part 21 is adapted to the shape and size of the mounting hole 101. If the mounting hole 101 is a square hole, the pressing part 21 is a square segment, and the connecting part 22 can be a cube, cuboid, or cylinder. The size of the connecting part 22 is smaller than the size of the mounting hole 101, which can ensure that there is a certain gap between the connecting part 22 and the mounting hole 101 of the mattress, thereby increasing the air circulation inside the mattress. If the mounting hole 101 is a circular hole, the pressing part 21 is a cylinder, and the connecting part 22 can be a cube, cuboid, or cylinder. The size of the connecting part 22 is smaller than the size of the mounting hole 101.

[0067] The mattress has a spring 3 installed in the mounting hole 101, with a piston cap 2 above it. Each row of piston caps 2 is pierced by a steel bar 4. Each splicing module is connected to each row of piston caps 2 by multiple steel bars 4, ensuring that the pressure is evenly distributed across the entire mattress surface when the mattress is under stress, providing more even support and enhancing the overall stability of the mattress, making it more stable during use. The connection of multiple steel bars 4 can effectively disperse the force on the springs, reduce the burden on individual springs, thereby extending the life of the springs and improving the overall durability of the mattress. It can also effectively reduce the impact on other parts of the mattress when turning over, improving the mattress's anti-interference ability.

[0068] When assembling the mattress springs, firstly, multiple springs are placed into their corresponding mounting holes 101. Each mounting hole 101 is designed with dimensions that match the springs, ensuring that the springs can be placed stably within them. Next, the connecting part 22 of the piston cap 2 is placed downwards into the mounting hole 101, so that one end of the spring is connected to the bottom end of the connecting part 22, and the other end is fixedly connected to the bottom end of the mounting hole 101. The design of the piston cap 2 allows the spring to remain stable within the mounting hole 101 and withstand a certain amount of pressure. When the pressing part 21 on the top of the piston cap 2 is pressed down, the strip hole 103 on the side of the mattress will expose the limiting hole of the connecting part 22. At this time, the reinforcing bar 4 is passed through the strip hole 103 and the limiting hole in sequence, inserted and fixed in the limiting hole of the piston cap 2. In this way, the piston cap 2 is fixed in the mounting hole 101. After the reinforcing bar 4 is inserted, washers 5 are installed at both ends and cotter pins are inserted to ensure the stability and safety of the springs within the mattress.

[0069] The aforementioned mounting holes 101 are arranged in a 7×10 array. If 70 springs are placed into the 7×10 array of mounting holes 101 inside the mattress, then 10 steel bars 4 are required. The mounting holes 101 can also be circular. The shape and number of mounting holes 101 are not specifically limited and can be set according to actual needs.

[0070] Preferably, the lower middle positions of the first splicing module 11 and the second splicing module 12 are respectively provided with a first notch 111 and a second notch 121 along the length direction, and the upper middle positions of the third splicing module 13 and the fourth splicing module 14 are respectively provided with a first mortise and tenon joint 131 and a second mortise and tenon joint 141 that are adapted to the first notch 111 and the second notch 121 along the length direction.

[0071] The second splicing module 12 and the fourth splicing module 14 have a third notch 122 and a fourth notch 142 respectively on the left side middle along the width direction. The first splicing module 11 and the third splicing module 13 have a third mortise and tenon joint 112 and a fourth mortise and tenon joint 132 respectively on the right side middle along the width direction, which are adapted to the third notch 122 and the fourth notch 142.

[0072] More preferably, the first notch 111 and the second notch 121 are of equal size, the third notch 122 and the fourth notch 142 are of equal size, and the first notch 111 is larger than the third notch 122.

[0073] Preferably, the splicing module includes a fabric layer, a support layer, and a filling layer, with the filling layer located above the support layer and the fabric layer covering the outside of the filling layer.

[0074] Mounting holes 101 are evenly distributed within the support layer of the splicing module.

[0075] More preferably, the filling layer is made of sponge or memory foam.

[0076] Preferably, the spring 3 has a double-layer structure, which consists of a first spring 31 located on the outside and a second spring 32 nested inside the first spring 31. The diameter of the first spring 31 is larger than the diameter of the second spring 32.

[0077] The dual-spring system provides dual support, significantly enhancing the mattress's support, comfort, and durability. The second spring 32 (small spring) has a smaller diameter and softer elasticity, providing additional comfort and cushioning. The first spring 31 (large spring) has a larger diameter and firmer elasticity, capable of withstanding greater pressure and providing stable support for the mattress.

[0078] Example 2

[0079] Compared to Example 1, see Figures 10-14 It also includes a fifth splicing module 15 and a sixth splicing module 16. The first splicing module 11, the second splicing module 12, the third splicing module 13, the fourth splicing module 14, the fifth splicing module 15 and the sixth splicing module 16 form a second type of spliced ​​mattress.

[0080] The fifth splicing module 15 has a fifth notch 151 at the middle left side along the width direction, which is adapted to the third tenon joint 112. The fifth splicing module 15 has a fifth tenon joint 152 at the middle right side along the width direction, which is adapted to the third notch 122.

[0081] The sixth splicing module 16 has a sixth notch 161 at the middle left side along the width direction, which is adapted to the fourth tenon joint 132. The sixth splicing module 16 has a sixth tenon joint 162 at the middle right side along the width direction, which is adapted to the fourth notch 142.

[0082] The fifth splicing module 15 has a seventh notch 153 at the lower middle position along the length direction, and the sixth splicing module 16 has a seventh mortise and tenon joint 163 at the upper middle position along the length direction that matches the seventh notch 153.

[0083] Example 3

[0084] Compared to Embodiment 2, it also includes a seventh splicing module 18, an eighth splicing module 19, and a ninth splicing module 110, which are spliced ​​together using mortise and tenon joints to form a third type of spliced ​​mattress. For details of the splicing structure, please refer to [link / reference needed]. Figures 15-17 .

[0085] Example 4

[0086] Compared to Embodiment 1, the cross-section of the square mattress is set to square; in addition, it also includes four arc-shaped splicing modules 17. The inner end face of the arc-shaped splicing module 17 is flat, and the outer end face of the arc-shaped splicing module 17 is curved. The inner end faces of the four arc-shaped splicing modules 17 are respectively spliced ​​with the outer surfaces of the first splicing module 11, the second splicing module 12, the third splicing module 13, and the fourth splicing module 14 through the fifth tenon structure to form a circular mattress, referred to as the fourth type of splicing mattress. For the specific splicing structure, see [link to specific splicing structure]. Figures 18-20 .

[0087] Furthermore, the number of splicing modules and the number and specific form of mortise and tenon structures are not limited to the solutions in the four embodiments mentioned above, and can be freely combined.

[0088] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A modular mattress, characterized in that, It includes at least four splicing modules, which are respectively referred to as the first splicing module, the second splicing module, the third splicing module, and the fourth splicing module; The first splicing module and the second splicing module are spliced ​​together horizontally using a first mortise and tenon structure, the third splicing module and the fourth splicing module are spliced ​​together horizontally using a second mortise and tenon structure, the first splicing module and the third splicing module are spliced ​​together vertically using a third mortise and tenon structure, and the second splicing module and the fourth splicing module are spliced ​​together vertically using a fourth mortise and tenon structure, forming a complete square mattress. The first and second splicing modules have a first notch and a second notch respectively at the lower middle position along the length direction. The third and fourth splicing modules have a first mortise and tenon joint and a second mortise and tenon joint respectively at the upper middle position along the length direction, which are adapted to the first and second notches. The second and fourth splicing modules have a third notch and a fourth notch respectively at the left middle position along the width direction. The first and third splicing modules have a third mortise and tenon joint and a fourth mortise and tenon joint respectively at the right middle position along the width direction, which are adapted to the third and fourth notches. The first splicing module, the second splicing module, the third splicing module, and the fourth splicing module each have multiple springs and multiple mounting holes for installing the springs arranged along the height direction inside. Each of the splicing modules has a plurality of piston caps corresponding to the springs on its top; the plurality of mounting holes are arranged in an array, and the plurality of piston caps in each row of mounting holes are connected by a steel bar, both ends of the steel bar are fitted with washers, and the outer end of the steel bar is fitted with a cotter pin corresponding to the outer side of the washers. The piston cap includes a pressing part at the top and a connecting part at the bottom. The shape of the pressing part is adapted to the shape of the mounting hole, and the pressing part and the connecting part are integrally formed. The connecting part has a limiting hole for inserting the reinforcing bar in the radial direction. The side of the splicing module has a strip hole for passing through the reinforcing bar.

2. The interlocking mattress according to claim 1, characterized in that, The mounting hole can be a square hole or a round hole.

3. The interlocking mattress according to claim 1, characterized in that, The first and second notches are of equal size, the third and fourth notches are of equal size, and the first notch is larger than the third notch.

4. The interlocking mattress according to claim 3, characterized in that, It also includes a fifth splicing module and a sixth splicing module; The fifth splicing module has a fifth notch that matches the third tenon joint along the width direction at the middle left side position, and a fifth tenon joint that matches the third notch along the width direction at the middle right side position. The sixth splicing module has a sixth notch that matches the fourth tenon joint along the width direction at the middle left side position, and a sixth tenon joint that matches the fourth notch along the width direction at the middle right side position. The fifth splicing module has a seventh notch along its length at the lower middle position, and the sixth splicing module has a seventh mortise and tenon joint that matches the seventh notch along its length at the upper middle position.

5. The interlocking mattress according to claim 1, characterized in that, The cross-section of the square mattress is square; It also includes four arc-shaped splicing modules. The inner end face of the arc-shaped splicing module is a plane, and the outer end face of the arc-shaped splicing module is an arc surface. The inner end faces of the four arc-shaped splicing modules are respectively spliced ​​with the outer surfaces of the first splicing module, the second splicing module, the third splicing module, and the fourth splicing module through the fifth tenon structure to form a circular mattress.

6. The interlocking mattress according to claim 1, characterized in that, The splicing module includes a fabric layer, a support layer, and a filling layer, with the filling layer located above the support layer and the fabric layer covering the outside of the filling layer; The mounting holes are evenly distributed within the support layer.

7. The interlocking mattress according to claim 6, characterized in that, The filling layer is made of sponge or memory foam.

8. The interlocking mattress according to claim 1, characterized in that, The spring is divided into a first spring located on the outside and a second spring nested inside the first spring, wherein the diameter of the first spring is larger than the diameter of the second spring.